Inyri has a point. My eyes are pretty good at noticing detail (or lack thereof, in some cases), and when I first played USE, I couldn't really tell the difference (except for a slight difference of smoothness, so slight I couldn't tell until I was at the end of the game after a 12 hour l4d2 marathon) between framerate for this game and framerate for my other games, like L4D2 (which caps at 60), Modern Warfare 2 (caps at 60 for multiplayer, goes well above 100 in some scenes in single player), or Half Life 2 (which I have seen go upwards past 300 FPS)